The waterfall model Requirements athering ar Definition 图, Specification g Implementation Integration and Deployment Maintenance www.oseng.com O Lethbridge/Laganiere 2001 Chapter Il: Managing the Software Process© Lethbridge/Laganière 2001 Chapter 11: Managing the Software Process 7 The waterfall model V & V Requirements Gathering and Definition V & V Specification V & V Design V & V Implementation V & V Maintenance V & V Integration and Deployment